Sheila arranged a total of 680. chairs for a school assembly. if she placed an equal amount of chairs in 20 rows, how many chairs are in each row.

If the altitude is drawn to the hypotenuse of a right triangle, then the two triangles formed are similar to the original triangle and to each other. which set of triangles shows the similar triangles created by the altitude in the diagram?

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line

Zahra wants the equation below to have an infinite number of solutions when the missing number is placed in the box.